newbie question about openembedded dependency tracking

Rod Whitby rod at
Sun Aug 19 02:08:26 CEST 2007

Ray Lehtiniemi wrote:
> hi all
> just got my neo1973 and am getting up to speed on the build environment.  i am 
> following the instructions at
> it seems like i have gotten the package built once.  however, i'm not sure 
> about the dependency tracking...
> i would expect that:
>   # touch local/packages/myhelloworld/files/myhelloworld.c
>   # make openmoko-devel-image
> would notice that it needs to rebuild myhelloworld, but it doesn't.  am i 
> expecting too much, or did i do something wrong?

You are expecting too much. Bitbake/OE works on time-stamp files and
version numbers in the .bb files.  If you change something, you need to
either bump the PR number, or use the -c rebuild task.

-- Rod

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